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BACS: Chemical Tracer Measurements

Summary

These Chemical Tracer Measurements are part of the BACS (BioAerosol and Convective Storm) campaign. The purpose of the BACS campaign was to characterize the dynamics between convective storms and bioaerosols in a grassland environment. The focus of PI Stone’s group was on characterizing bioaerosol types, concentrations, and sizes during quiescent and convective conditions using offline techniques combined with online instrumentation. These measurements will provide better insight into the impact of convective storms on bioaerosols, allowing for improved modelling and predictions. This archive is for chemical tracer measurements of samples collected using high flow impactors in a soil plot located northwest of the NEON flux tower. The campaigns took place from May 23 – June 17, 2022, and from May 22 – June 23, 2023, and were conducted in northeastern Colorado, with a latitude of 40.816284 N, a longitude of 104.746390 W, and an average altitude of 1654 m. Samples were collected continuously throughout both campaigns, with sample durations ranging from 6-24 hours.

Data access

ORDER data to made available for download

Additional information

Identifier	DOI: https://doi.org/10.26023/5FR5-X916-N506
Data Quality	final
Versions	1.0 (2025-05-20) 1.1 (2025-11-19): Updated to ensure data is not overly truncated and to improve data headings. (Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
Subscribe	Subscribe to receive email when new or updated data is available.
Related projects	BACS: BioAerosols and Convective Storms
Frequency	no set schedule
Language	English
Platforms	Field Sites
Instruments	FSI - Filter Sampling Instrument Ion Chromatographs
GCMD Science Keywords	AEROSOL PARTICLE PROPERTIES CHEMICAL COMPOSITION Expand keywords
Documentation	BACS_ChemicalTracers_Readme_v1.1.pdf [202 KiB]
Related links	info: BACS Data Policy homepage: BACS Project Page

Temporal coverage

Begin datetime	2022-05-23 00:00:00
End datetime	2023-06-23 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 40.81628, Minimum (South) Latitude: 40.81628
Minimum (West) Longitude: -104.74639, Maximum (East) Longitude: -104.74639

Primary point of contact information

EOL Data Support <datahelp@eol.ucar.edu>

Additional contact information

author: Teresa Feldman
author: Janeshta Fernando
author: Chamari Mampage
author: Sue C. van den Heever <sue@atmos.colostate.edu>
author: Paul J. DeMott <Paul.Demott@colostate.edu>
author: Sonia Kreidenweis <sonia@atmos.colostate.edu>
author: Leah Grant <leah.grant@colostate.edu>
author: Russell J. Perkins <russell.perkins@colostate.edu>
author: Elizabeth A. Stone <betsy-stone@uiowa.edu>

Citation

Feldman, T., et al. 2025. BACS: Chemical Tracer Measurements. Version 1.1. null. https://doi.org/10.26023/5FR5-X916-N506. Accessed 05 Dec 2025.

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